Encloses notes from years of breakfast conversations with CH's brother William Herschel. Asks JH 'to take the burden of the [Zemata?] M.S. Secretaryship of [sic] my shoulders.' Recalls that JH did the same for 'Mr. Pickering some years ago.' Wishes JH and Margaret a happy new year. CH's notebook [79pp in English] including: necrology of astronomers and mathematicians; notes on plane and spherical geometry; star observations; various tables regarding measurement conversion, planetary systems, geography, and algebra.